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FRONT PANEL
INPUT JACKS (A) and (B)
Each channel ol ihe XR-500 is equipped with iwo input jacks which are connected in a unique circuit that allows a wde range of inputs to
be handled. When only one microphone is used, the "A" input jack is more sensitive than the "8" input tack Tnishigh and low gain featuie
enables optimum microphone matching. If a hgh output microphone is overloading the sensitive "A' r-put, simply reconnect this mike into
the low ga n " B" jack. When two inputs are used in oachchannd. t&e input circuit automatically baancos to equalize the gam m bolh A and B
jacks This simple out elective switching system gives -he user much greater flexibility in choice of inpul sensitivities and overload
protection.
CHANNEL CONTROLS
Each of Ihe XR-500's five independent channels contain live controls Gain. Monitor. Effects and High and Low Equalization
CHANNEL GAIN CONTROL (C)
This control varies the gain of the mput preamplifier. This input preamp is designed around a variable negative feedback approach and
provides optimum dynamic range as well asextromely low noise operation This control is used to set the level ottherespectivechannels to
achieve the
main ml*.
CHANNEL MONITOR CONTROL (D)
The channel monitor control is a totally
independent
lovel aejustmen; used tor deriving the proper monitor mv It is important that the
user be aware that this channel monitor send is tot any independent from ali other cnannel controls and feeds directly into Ihe monitor buss
whose output is determined by the master monitor control (I).
CHANNEL EQUALIZATION CONTROLS
The channel equalization conlrols are of the active 'shelving" type and provide 15 dE of boost or cut in their respective frequency
ranges These equalization controls are exfremely effective and will allow the user tc achieve almost any Wend of high s and low's with
proper adjustment Since these EQ ccrtrois are capable of a 30 CB range, care should be taken lo properly utilize thei' capabilities
Excessive boosting of low's can cause "muffled" or 'boemy" sounds, as well as tending toprematuroly overload the power amp becausect
excessivo low frequency power requirements. Overbocstng the high's will tend to cause a 'strident' or "screechy tonality, as well as
tend ng to emphasize residual preamp noise and susceptibility to acouslic feedback. Care should be observed when using excessive cutin
either frequency range since excessive cutting may degrade the dynamic rango capabilities of tho input preamp and create poor tonality
These channel equalization controls have been provided to achieve tonal balance, as wel as feedback control m the individual
channels ''or Ihe main mix only. At' experimentation should begin with these controls set in the flat' 0" (straight up or t ?:00) position Use of
the individual channel controls in conjunction with the ma&er graphic equalizer is vita to provide the user with optimum equalization
CHANNEL LOW EQUALIZATION CONTROL (E)
The low equalization conirol determines whether the low frequencies wil be boosted or cut Boost occurs in the clockwise settings,
while cut occurs in the counterclockwise settings. Pat response is obtained in the "0" or vertical position
CHANNEL HIGH EQUALIZATION CONTROL (F)
The high equal zation control determines whether the hgh frequencies will be boosted or cut Boost occurs n the clockwise sellings,
wnie cur occurs In the counterclockwise sellings Fiat response is obtained in the ''O'1 or vertical position.
CHANNEL EFFECTS CONTROL (G)
The channel ef teas send control adiusts the signal level appled to the effects mix buss which Iceds the internal reverberation system,
as wen as the effects output on the patch pone:. The overall settings of tho channel effects send controls determine the amount of reverb
drive, as wel as the signal output level ava labte from the effects output jack it is important to note that the effects send control is a' post
type adjustment which is located in the circuit
after
the charnel gain and equalization controls. The Lser should be aware that use of tho
interna reverberation system can only occur when tho channel gam. the channel effects send, the master revero relurn and the master ga in
controls are ail properly adjusted
MASTER SECTION
The XR-500 master section contains overal master level control Ihe master montcr conirol and the reverb return (tc master) centre, as
wen as a seven-band graphic equalizer and patch panel. As the name mplies. the master controls operate os the tmal control element -or
ihoir respective mixing busses and Ihe master graphic EO determines the final overall equalization
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